This morning I left my abusive partner however he has stolen my front door key of which I only have one. The door is one of those with a normal handle on the inside but the outside just has a square block handle that doesn't move u just turn the key and it opens the door, another key in the other side doesn't work (probably Coz its not the right key) but i do not want him gaining entry whatsoever how can I block the keyhole til monday when i can change the locks.